#include<iostream>
#include<stdio.h>
using namespace std;
int main(){
    int i;
    char s[100]="";
    gets(s);
    for(i=0;s[i]!='\0';i++)
    {if(s[i]>='a'&&s[i]<='z')
            s[i]=(s[i]+2-'a')%26+'a';
            else if(s[i]>'A'&&s[i]<='z')
                s[i]=(s[i]-'A'+2)%26+'A';
    }

    puts(s);
    return 0;
}
